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A perianal fistula (fistula-in-ano) refers to an abnormal connection between the anal canal and the perianal skin. The majority are associated with anorectal abscess formation, with one third of patients with an anorectal abscess having an associated perianal fistula at the time of presentation. The formation of an perianal fistula typically occurs as a consequence of an perianal. An anal fistula is a small tunnel that develops between the end of the bowel and the skin near the anus (where poo leaves the body). Theyre usually the result of an infection near the anus causing a collection of pus in the nearby tissue. When the pus drains away, it can leave a small channel behind. Anal fistula treatment is associated with high recurrence rate. Anal fistula treatment requires a lot of planning and each patient require expert handling. Therefore, anal fistula should always be treated by an expert colo-rectal surgeon who has special interest in dealing with anal fistulas. A fistula can be present with or without an abscess and may connect just to the skin of the buttocks near the anal opening. An anal fistula is an abnormal tunnel from the anus or rectum to the skin or another organ. An anorectal abscess is a collection of pus from an infection in the anus or rectum. What causes an anorectal abscess and anal fistula? You might have been born with an anal fistula. Healthtap doctor answers on symptoms, diagnosis, treatment, and more dr. Loh on is fistula dangerous i believe youre asking about av fistula for dialysis access (transfer blood to and from dialysis machine for treatment). Avfs last much longer on average than dialysis catheter & longer than a graft. If youre dealing with one or more fistulas, youll surely want them to be gone. Ive put together a basic guide to anal fistulas to help you understand this difficult condition and what options are available. Anal fistula is a chronic abnormal communication between the epithelialised surface of the anal canal and usually the perianal skin. An anal fistula can be described as a narrow tunnel with its internal opening in the anal canal and its external opening in the skin near the anus. Anal fistulae commonly occur in people with a history of anal abscesses. About 50 of patients with an anal abscess will develop a complication called a fistula. A fistula is a small tunnel that makes an abnormal connection between the site of the abscess and the skin. An anal, or rectal, abscess occurs when a cavity in the anus becomes filled with pus. It causes extreme pain, fatigue, rectal discharge, and fever.